1 | /* $Id: log.c,v 1.1 1999-09-06 02:20:02 bird Exp $
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2 | *
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3 | * log - C-style logging - kprintf.
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4 | *
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5 | * Copyright (c) 1998-1999 knut st. osmundsen
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6 | *
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7 | */
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8 |
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9 |
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10 | /*@Const************************************************************************
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11 | * Defined Constants *
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12 | *******************************************************************************/
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13 | #define INCL_DOSERRORS
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14 | #define INCL_NOPMAPI
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15 |
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16 | /*@Header***********************************************************************
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17 | * Header Files *
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18 | *******************************************************************************/
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19 | #include <os2.h>
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20 |
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21 | #include <string.h>
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22 | #include <stdarg.h>
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23 | #include <builtin.h>
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24 |
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25 | #include "dev32.h"
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26 | #include "options.h"
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27 | #include "log.h"
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28 | #include "sprintf.h"
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29 | #include "yield.h"
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30 |
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31 |
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32 | /*******************************************************************************
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33 | * Global Variables *
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34 | *******************************************************************************/
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35 | static char achBuffer[512]; /* buffer for kprintf */
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36 |
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37 |
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38 | /*******************************************************************************
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39 | * Internal Functions *
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40 | *******************************************************************************/
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41 | static void write(char *psz);
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42 |
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43 |
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44 | /**
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45 | * Writes a string to logBuffer and to comport.
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46 | * @param psz Pointer to zero-string to be put to com-port.
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47 | * @param Port Port number of the com-port.
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48 | * @remark A lonely '\n' will result in a '\r\n' sequence.
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49 | */
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50 | static void write(char *psz)
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51 | {
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52 | /* if logging (to com port) enabled - log to COM-port */
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53 | if (options.fLogging)
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54 | {
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55 | ULONG ulPort = options.usCom;
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56 | int cch = 0;
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57 |
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58 | while (*psz != '\0')
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59 | {
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60 | while (!(_inp(ulPort + 5) & 0x20)); /* waits for port To Be ready */
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61 | _outp(ulPort, *psz); /* put char and inc pointer */
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62 |
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63 | /* new line fix */
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64 | if (psz[1] == '\n' && psz[0] != '\r')
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65 | {
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66 | while (!(_inp(ulPort + 5) & 0x20)); /* waits for port To Be ready */
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67 | _outp(ulPort, '\r'); /* put char and inc pointer */
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68 | cch++;
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69 | }
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70 | psz++;
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71 | if ((++cch % 3) == 0) /* 9600 bit/s -> 1066 bytes (9bit) -> 3 chars takes 3.2 ms to send */
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72 | Yield();
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73 | }
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74 | }
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75 | }
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76 |
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77 |
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78 | /**
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79 | * printf to log.
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80 | * @param pFormat Formatstring
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81 | * @param ... Other stuff used in pFormat.
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82 | * @remark This functions may yield the CPU!
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83 | */
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84 | void _kprintf(const char *pszFormat, ...)
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85 | {
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86 | va_list arg;
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87 |
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88 | /* check pFormat */
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89 | if (pszFormat == NULL)
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90 | {
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91 | write("\nWarning: Null pointer detected in kprint\n");
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92 | return;
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93 | }
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94 |
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95 | /* build string */
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96 | va_start(arg, pszFormat);
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97 | vsprintf(achBuffer, pszFormat, arg);
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98 | va_end(arg);
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99 |
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100 | /* write string */
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101 | write(achBuffer);
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102 | }
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